<%@ page language="java" contentType="text/html; charset=cp1251"
    pageEncoding="cp1251"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=cp1251">
<title>Insert title here</title>
</head>
<body>
<%
    if (session.getAttribute("userid") == null)
    	response.sendRedirect("loginpage.jsp?backto=another.jsp");
%>
<p> Some another page <p/>
</body>
</html>